What is the function for common carotid arteries for frogs?​

Asnail, elodea (aquatic plant), or both were added to the tubes and they were stoppered. tubes were placed under a grow light for 24 hours and the results recorded. the test tubes were then covered for 24 hours to produce a dark environment and the results recorded. which statement best explains the change in test tube d from the light setup to the dark setup.

This is one form of rna that transports a specific amino acid to a ribosome during protein synthesis.

What is the importantence of the carbon and nitretan cycles in the environment